1797488640 has 384 divisors, whose sum is σ = 6624802080. Its totient is φ = 449839104.

The previous prime is 1797488621. The next prime is 1797488653. The reversal of 1797488640 is 468847971.

It is a happy number.

1797488640 is a `hidden beast` number, since 17 + 97 + 488 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33914854 + ... + 33914906.

Almost surely, 2^1797488640 is an apocalyptic number.

1797488640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1797488640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3312401040).

1797488640 is an abundant number, since it is smaller than the sum of its proper divisors (4827313440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1797488640 is an equidigital number, since it uses as much as digits as its factorization.

1797488640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 1797488640 is about 42396.7998792362. The cubic root of 1797488640 is about 1215.8744099287.

The spelling of 1797488640 in words is "one billion, seven hundred ninety-seven million, four hundred eighty-eight thousand, six hundred forty".